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प्रश्न
State whether the following statement is true or false. Correct the false statement.
Phenolphthalein is a natural indicator.
विकल्प
True
False
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उत्तर
This statement is False.
Explanation:
Phenolphthalein is a synthetic indicator.
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संबंधित प्रश्न
Fresh milk from cows has a pH of 6. So how does the pH change when this milk is turned to curd? Explain your answer.
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What colour will the universal indicator show if you add it to the following substance?
Potassium hydroxide, pH = 12
Fresh milk has a pH of 6. When it changes into curd (yogurt), will its pH value increase or decrease? Why?
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What do you think will be the pH of an antacid solution?
Less than 7 or more than 7.
Separate the following into substances having pH values above and below 7. How do these influence litmus paper?
- Lemon juice
- Solution of washing soda
- Toothpaste
- Vinegar
- Stomach juices
Which of the following elements would form oxides which would indicate pH values less than seven, using moist pH paper?
Magnesium, Carbon, Sulphur, Hydrogen, Copper
Hibiscus flower is an example for natural indicator.
